Civil Engineering - Concrete Technology - Discussion

Discussion Forum : Concrete Technology - Section 3 (Q.No. 23)
23.
If the effective working time is 7 hours and per batch time of concrete is 3 minutes, the output of a concrete mixer of 150 litre capacity, is
15, 900 litres
16, 900 litres
17, 900 litres
18, 900 litres
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
20 comments Page 2 of 2.

Chandrbabu said:   9 years ago
Which option is correct?

Please explain it.

123 said:   9 years ago
Why should we consider the efficiency of batching plant as 90%?

Ajay k said:   9 years ago
Is there any thumb rule for the efficiency of the concrete mixer?

Lokesh said:   1 decade ago
@Jay shah in construction industry efficiency will be assigned according to condition of equipment. Mostly for time concern and making fruitful profits 90% will be considered.

Samuel said:   1 decade ago
Effective working time = 420 minutes (7 hours).

Batching time = 3 minutes.

No : of batching = 420/3 = 140.

Output concrete for 1 batching = 150 liters.

For 140 batching = 150*140 = 21000 liters. (This is the actual value).

But I think here they consider the efficiency of the batch plant as 90%.

= 21000*90/100 = 18900 liters.

Jay Shah said:   1 decade ago
There is any clues for assuming the efficiency = 90%?

Amit said:   1 decade ago
Effective working time= 7 hours = 7*60 = 420 minute.

Per batch time = 3 minute.
Number of mixing batch = 420/3 = 140.

Output concrete of per batch = 150 litre.
Output concrete 140 batch = 140*150 = 21000 litre.

Assuming the efficiency = 90%.
21000* 0.9 = 18900.

MOHD PARVEZ said:   1 decade ago
Effective working time= 7 hours = 7*60 = 420 minute.

Per batch time = 3 minute.

Number of mixing batch = 420/3 = 140.
Output concrete of per batch = 150 litre.
Output concrete 140 batch = 140*150 = 21000 litre.

Bina said:   1 decade ago
How do this answer came. Please explain ?

Ajay said:   1 decade ago
Can any solve this problem how this answer come?


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